County Maps US

Broadwater County, Montana

A county in Montana, ranked 27 of 56 by population.

CountyFIPS 30007

Within Montana
Broadwater County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Townsend, the county seat, located via the 2025 Census Gazetteer.

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Population
8,493
+1,633 (+23.8%) since 2020
Land area
1,192
square miles. A further 3.7% of the total area is water
Population density
7.1
people per square mile, computed rather than published
County seat
Townsend
Seat of county government.
Established
1897
128 years ago
Largest city
Townsend city
Population 2,272.

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of Broadwater County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Broadwater County, Montana from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 466 by 800 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Broadwater County ranks

Position among the 56 counties of Montana, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn MontanaNationally
Population8,49327th of 562,537th of 3,144
Land area1,192 sq mi51st of 56514th of 3,144
Population density7.1 per sq mi12th of 562,683rd of 3,144
Median household income$70,37419th of 561,173rd of 3,143

Full data for Broadwater County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population8,493Vintage 2025 Population Estimates
Population in 20206,860Vintage 2025 Population Estimates
2020 estimates base?6,775Vintage 2025 Population Estimates
Land area1,192 sq mi2025 Gazetteer Files
Water area45.7 sq mi2025 Gazetteer Files
Total area1,238 sq mi2025 Gazetteer Files
Population density?7.1 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$70,374American Community Survey 2020-2024 5-Year Estimates
Median home value$426,600American Community Survey 2020-2024 5-Year Estimates
Median age45.9American Community Survey 2020-2024 5-Year Estimates
Households2,822American Community Survey 2020-2024 5-Year Estimates
Housing units3,178American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
-3
73 births, 76 deaths
Net migration
+211
More people moved in than moved out.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 4 areas bordering Broadwater County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
Meagher CountyMontana69 mi2,137
Jefferson CountyMontana57 mi13,329
Gallatin CountyMontana53 mi128,740
Lewis and Clark CountyMontana29 mi75,331

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

All 56 counties of Montana

Open the interactive Montana county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.